ensure submodules are checked out on stemcell building vm
Fix formatting, remove redundant return

Signed-off-by: Jeffrey Peckham <peckham@pivotallabs.com>
Wire in stubbed RenderedTemplatesUploader

Will eventually upload rendered file templates to blobstore for use by the agent.

[#60724646]

Signed-off-by: Jeffrey Peckham <peckham@pivotallabs.com>
keep source name and destination name with erb file templates
add fakefs as development dependencies to gems requiring it